Line guide

ABSTRACT

The line guide comprises a pair of thin plastic sheets held together by a rivet, there being a prestressed resilient washer interposed between at least one of the plies and the head of the rivet whereby a spring pressure is always provided for clamping to the edge of the paper being copied.

United States Patent Wilkin 1451 Aug. 15, 1972 [54] LINE GUIDE 2,583,719 1/1952 White ..24/141 72 I t I Do 81 2,827,719 3/1958 Nairn ..1 16/1 19 UX 1 men or 8 55 3,425,389 2/1969 Sacco et a1. ..1 16/1 19 [22] Filed: Sept. 21, 1970 Primary Examiner-Louis J. Capozi 21 Appl. N0.: 73,795 e m and Ham ABSTRACT '8" 116/119 1 2 The line guide comprises a Pair of thin Plastic sheets held together by a rivet, there being a prestressed [58] new of Search 281/42 24/141 resilient washer interposed between at least one of the plies and the head of the rivet whereby a spring pres- [56] I References Cited sure is always provided for clamping t0 the edge of the UNITED STATES PATENTS P p being m 3 Claims, 4 Drawing Figures LINE GUIDE BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to line guides that attach to the edge of paper. Such line guides are ordinarily quite simple as compared with line guides that attach to copyholders.

2. Discussion of Prior Art The simplest form of an edge mounted line guide of this character comprises a pair of juxtaposed plastic strips riveted or stapled together at one end, the strips being separable at the other end to receive the paper between them. The paper wedges in the reduced clearance space between the plies at the region of the staples.

I have found that the prior art devices operate satisfactorily for a number of times. However, after continued use, the strips are caused to bulge out at the region of the staples and a permanent set in the plastic material soon results. The requisite wedging action is lost. The obvious solution is to increase the thickness and strength of the plastic plies. But this is a false solution, because as the thickness of the plies increases, so does its weight. The heavier the line guide is, the more is itstendency to slip, especially under the influence of vibration of typewriters or other adjacent office machines. Moreover, thick plies of plastic are not im mune from taking permanent sets too.

The primary object of this invention is to provide a simple light-weight edge mounted line guide that firmly attaches to the edge of paper without in any manner impeding the quick attachment, removal or adjustment thereof.

BRIEF SUMMARY OF THE INVENTION In order to accomplish the foregoing object, I provide a line guide of this character that incorporates a second holding action, namely, a spring clamping action between the plastic strips. .The spring clamping action is achieved simply and by apparatus that adds no significant weight: a resilient prestressed washer located beneath the head of the rivets.

BRIEF DESCRIPTION OF THE DRAWINGS A detailed description of the invention will be made with reference to the accompanying drawings. These drawings, unless described as diagrammatic or unless otherwise indicated, are to scale.

FIG. 1 is a pictorial view of my improved line guide in place at the edge of the paper.

FIG. 2 is an exploded pictorial view showing the manner in which the line guide is assembled.

FIG. 3 is an enlarged longitudinal sectional view of the line guide.

FIG. 4 is a pictorial view of my line guide shown cartied in the three ring binder.

DETAILED DESCRIPTION The following detailed description is of the best presently contemplated mode of carrying out the invention. This description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention since the scope of the invention is best defined by the appended clairns. The line guide 10 comprises upper and lower strips 12 and 14 of translucent plastic sheet material. In the present instance, the strips 12 and 14 are formed from a single strip of material folded along a line 16.

The strips 12 and 14 are clamped together at one end of the guide by a pair of fasteners, namely, rivets 18 and 20 located in transverse alignment. Beneath the heads of both rivets are rubber or other suitable resilient pads, namely, washers 22 and 24. The washers are stressed by the rivets. These washers, reacting against the heads of the rivets, impose positive spring pressure on the plastic plies or strips at the region of the rivets. The edge of the paper inserted between the plies is accordingly held not only by wedging action, but by positive spring pressure.

Preferably, the washers are positioned at the heads that are formed by the riveting tool. In this manner the edges of the head curl into the washer to provide the requisite force. The washers thus protect the sheets from being cut by the rivets.

The lower strip 14 is cut off at a place not far displaced from the rivets in order to minimize weight. The lower strip forms a tongue, the shortened length of which facilitates its insertion beneath the paper sheet. In order to install the guide, the guide is held at its riveted end with the plies beyond the rivets free. The tongue 14 is inserted beneath the sheet andthe guide is gently slipped in place so that the edge of the paper is both wedged and clamped. To adjust the guide, the guide is moved laterally just enough to cause release and then moved into its new position.

Intending to claim all novel, useful and unobvious features shown or described, I, make the following claims:

I. In a line guide: I

a. a pair of juxtaposed plastic strips;

b. a pair of resilient flexible pads located in substantial transverse alignment on the strips; and a pair of fasteners for securing the strips and the pads together with the pads on the outside of the strips, said fasteners prestressing said pads whereby the edge of a paper sheet inserted between the strips is not only wedged in place, but resiliently clamped therebetween by the positive spring pressure of said prestressed flexible pads.

2. The combination as set forth in claim 1 in which said fasteners are hollow rivets, said flexible pads being resilient washers.

3. The combination as set forth in claim 2 in which said washers are inserted beneath and prestressed by the heads of the rivets that are formed by the riveting tool whereby the washers protect the sheet material from the head so formed. 

1. In a line guide: a. a pair of juxtaposed plastic strips; b. a pair of resilient flexible pads located in substantial transverse alignment on the strips; and c. a pair of fasteners for securing the strips and the pads together with the pads on the outside of the strips, said fasteners prestressing said pads whereby the edge of a paper sheet inserted between the strips is not only wedged in place, but resiliently clamped therebetween by the positive spring pressure of said prestressed flexible pads.
 2. The combination as set forth in claim 1 in which said fasteners are hollow rivets, said flexible pads being resilient washers.
 3. The combination as set forth in claim 2 in which said washers are inserted beneath and prestressed by the heads of the rivets that are formed by the riveting tool whereby the washers protect the sheet material from the head so formed. 